/* Base Styles */
:root {
  /* Color Palette */
  --primary-color: #0c1c2c;
  --secondary-color: #1a3a5f;
  --accent-color: #c9a55c;
  --accent-hover: #d4b978;
  --text-light: #ffffff;
  --text-dark: #333333;
  --text-muted: #777777;
  --bg-light: #f8f9fa;
  --bg-dark: #0c1c2c;
  --border-color: #e0e0e0;

  /* Typography */
  --heading-font: "Playfair Display", serif;
  --body-font: "Poppins", sans-serif;

  /* Spacing */
  --spacing-xs: 0.25rem;
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 2rem;
  --spacing-xl: 3rem;

  /* Shadows */
  --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.1);
  --shadow-md: 0 4px 8px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 8px 16px rgba(0, 0, 0, 0.1);

  /* Border Radius */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 16px;
  --radius-xl: 24px;

  /* Transitions */
  --transition-fast: 0.2s ease;
  --transition-normal: 0.3s ease;
  --transition-slow: 0.5s ease;
}

/* Reset */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
}

body {
  font-family: var(--body-font);
  font-weight: 400;
  line-height: 1.6;
  color: var(--text-dark);
  background-color: var(--bg-light);
  overflow-x: hidden;
}

h1,
h2,
h3,
h4,
h5,
h6 {
  font-family: var(--heading-font);
  font-weight: 700;
  line-height: 1.3;
  margin-bottom: var(--spacing-md);
  color: var(--primary-color);
}

p {
  margin-bottom: var(--spacing-md);
}

a {
  color: var(--secondary-color);
  text-decoration: none;
  transition: color var(--transition-normal);
}

a:hover {
  color: var(--accent-color);
}

ul,
ol {
  list-style-position: inside;
  margin-bottom: var(--spacing-md);
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

button,
.btn {
  cursor: pointer;
  font-family: var(--body-font);
  font-weight: 500;
  border: none;
  background: none;
  transition: all var(--transition-normal);
}

/* Container */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-lg);
}

/* Preloader */
.preloader {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: var(--bg-dark);
  display: flex;
  justify-content: center;
  align-items: center;
  z-index: 9999;
  transition: opacity 0.5s ease, visibility 0.5s ease;
}

.preloader.hidden {
  opacity: 0;
  visibility: hidden;
}

.loader {
  width: 50px;
  height: 50px;
  border: 3px solid rgba(255, 255, 255, 0.2);
  border-radius: 50%;
  border-top-color: var(--accent-color);
  animation: spin 1s ease-in-out infinite;
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

/* Header */
.header {
  background-color: var(--primary-color);
  padding: var(--spacing-md) 0;
  color: var(--text-light);
  box-shadow: var(--shadow-md);
}

.header-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0 var(--spacing-lg);
}

.logo-container {
  display: flex;
  align-items: center;
}

.logo {
  width: 60px;
  height: auto;
  margin-right: var(--spacing-md);
}

.college-name {
  font-size: 1.5rem;
  margin-bottom: var(--spacing-xs);
  color: var(--text-light);
}

.college-affiliation {
  font-size: 0.85rem;
  color: rgba(255, 255, 255, 0.8);
  margin-bottom: 0;
}

.secondary-logo img {
  width: 50px;
  height: auto;
}

/* Navigation */
.main-nav {
  background-color: var(--secondary-color);
  padding: var(--spacing-md) 0;
  position: relative;
  z-index: 100;
}

.nav-container {
  display: flex;
  justify-content: center;
  align-items: center;
}

.nav-links {
  display: flex;
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav-links li {
  margin: 0 var(--spacing-md);
}

.nav-links a {
  color: var(--text-light);
  font-weight: 500;
  padding: var(--spacing-sm) var(--spacing-md);
  position: relative;
  transition: color var(--transition-normal);
}

.nav-links a::after {
  content: "";
  position: absolute;
  bottom: -5px;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--accent-color);
  transition: width var(--transition-normal);
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--accent-color);
}

.nav-links a:hover::after,
.nav-links a.active::after {
  width: 100%;
}

.menu-toggle {
  display: none;
  flex-direction: column;
  justify-content: space-between;
  width: 30px;
  height: 21px;
  background: transparent;
  border: none;
  cursor: pointer;
  padding: 0;
  z-index: 10;
}

.menu-toggle span {
  display: block;
  width: 100%;
  height: 3px;
  background-color: var(--text-light);
  border-radius: 3px;
  transition: all var(--transition-normal);
}

/* Page Header */
.page-header {
  background-color: var(--primary-color);
  color: var(--text-light);
  padding: var(--spacing-xl) 0;
  text-align: center;
  position: relative;
}

.page-header::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(to right, rgba(12, 28, 44, 0.9), rgba(26, 58, 95, 0.8));
  z-index: 1;
}

.page-header .container {
  position: relative;
  z-index: 2;
}

.page-header h2 {
  font-size: 2.5rem;
  color: var(--text-light);
  margin-bottom: var(--spacing-sm);
}

.breadcrumb {
  font-size: 0.9rem;
  color: rgba(255, 255, 255, 0.7);
}

.breadcrumb a {
  color: var(--accent-color);
}

.breadcrumb a:hover {
  text-decoration: underline;
}

/* Section Headers */
.section-header {
  text-align: center;
  margin-bottom: var(--spacing-xl);
}

.section-header h2,
.section-header h3 {
  font-size: 2.2rem;
  margin-bottom: var(--spacing-sm);
}

.underline {
  width: 80px;
  height: 3px;
  background-color: var(--accent-color);
  margin: 0 auto var(--spacing-md);
}

/* CTA Buttons */
.cta-button {
  display: inline-block;
  padding: 0.8rem 2rem;
  background-color: var(--accent-color);
  color: var(--primary-color);
  font-weight: 600;
  border-radius: var(--radius-md);
  text-align: center;
  transition: all var(--transition-normal);
  box-shadow: var(--shadow-md);
  border: 2px solid var(--accent-color);
}

.cta-button:hover {
  background-color: transparent;
  color: var(--accent-color);
  transform: translateY(-3px);
  box-shadow: var(--shadow-lg);
}

.cta-button.secondary {
  background-color: transparent;
  color: var(--text-light);
  border: 2px solid var(--text-light);
}

.cta-button.secondary:hover {
  background-color: var(--text-light);
  color: var(--primary-color);
}

/* Footer */
.footer {
  background-color: var(--primary-color);
  color: var(--text-light);
  padding: var(--spacing-xl) 0 var(--spacing-md);
}

.footer-content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--spacing-xl);
  margin-bottom: var(--spacing-xl);
}

.footer-logo {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
}

.footer-logo img {
  width: 60px;
  height: auto;
  margin-bottom: var(--spacing-md);
}

.footer-logo h3 {
  font-size: 1.2rem;
  color: var(--text-light);
  margin-bottom: var(--spacing-xs);
}

.footer-logo p {
  color: rgba(255, 255, 255, 0.7);
  margin-bottom: 0;
}

.footer-links h4,
.footer-contact h4 {
  color: var(--text-light);
  font-size: 1.1rem;
  margin-bottom: var(--spacing-md);
}

.footer-links ul,
.footer-contact ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

.footer-links li {
  margin-bottom: var(--spacing-sm);
}

.footer-links a {
  color: rgba(255, 255, 255, 0.7);
  transition: color var(--transition-normal);
}

.footer-links a:hover {
  color: var(--accent-color);
}

.footer-contact li {
  display: flex;
  align-items: flex-start;
  margin-bottom: var(--spacing-md);
  color: rgba(255, 255, 255, 0.7);
}

.footer-contact i {
  color: var(--accent-color);
  margin-right: var(--spacing-sm);
  margin-top: 5px;
}

.footer-bottom {
  text-align: center;
  padding-top: var(--spacing-md);
  border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-bottom p {
  font-size: 0.9rem;
  color: rgba(255, 255, 255, 0.5);
  margin-bottom: 0;
}

/* Back to Top Button */
#back-to-top {
  position: fixed;
  bottom: 30px;
  right: 30px;
  width: 40px;
  height: 40px;
  background-color: var(--accent-color);
  color: var(--primary-color);
  border-radius: 50%;
  display: flex;
  justify-content: center;
  align-items: center;
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-normal);
  z-index: 99;
  box-shadow: var(--shadow-md);
}

#back-to-top.visible {
  opacity: 1;
  visibility: visible;
}

#back-to-top:hover {
  background-color: var(--accent-hover);
  transform: translateY(-5px);
}

/* Media Queries */
@media (max-width: 992px) {
  .college-name {
    font-size: 1.2rem;
  }

  .college-affiliation {
    font-size: 0.75rem;
  }

  .logo,
  .secondary-logo img {
    width: 50px;
  }
}

@media (max-width: 768px) {
  .header-container {
    flex-direction: column;
    align-items: center;
    text-align: center;
  }

  .logo-container {
    margin-bottom: var(--spacing-md);
  }

  .menu-toggle {
    display: flex;
  }

  .nav-links {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100vh;
    background-color: var(--primary-color);
    flex-direction: column;
    justify-content: center;
    align-items: center;
    transform: translateX(-100%);
    transition: transform var(--transition-normal);
    z-index: 5;
  }

  .nav-links.active {
    transform: translateX(0);
  }

  .nav-links li {
    margin: var(--spacing-md) 0;
  }

  .nav-links a {
    font-size: 1.2rem;
  }

  .menu-toggle.active span:nth-child(1) {
    transform: translateY(9px) rotate(45deg);
  }

  .menu-toggle.active span:nth-child(2) {
    opacity: 0;
  }

  .menu-toggle.active span:nth-child(3) {
    transform: translateY(-9px) rotate(-45deg);
  }
}

@media (max-width: 576px) {
  .college-name {
    font-size: 1rem;
  }

  .college-affiliation {
    font-size: 0.7rem;
  }

  .logo,
  .secondary-logo img {
    width: 40px;
  }

  .section-header h2,
  .section-header h3 {
    font-size: 1.8rem;
  }

  .page-header h2 {
    font-size: 2rem;
  }
}